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Bleeping Computer
Microsoft released emergency .NET security updates to patch a critical vulnerability known as Broccoli2Shell, also tracked as Node2Shell and HTTP2Shell. [...]
Dark Reading
This Cybersecurity Awareness Month's theme, "Securing the Next 250," asks us to look beyond vulnerabilities and consider what will make our digital systems resilient for generations.
The Hacker News
Cybersecurity researchers have disclosed a Microsoft 365 campaign that has been observed leveraging an adversary-in-the-middle (AitM) relay to capture sign-in sessions and then replay the stolen tokens to break into email accounts at 79 organizations. Huntress, which observed the activity between July 14 and September 22, 2026, said it detected 497 successful Microsoft 365 sign-in events across
The Hacker News
A memory-corruption flaw in Google's Brotli decoder sits in many programs that unpack Brotli-compressed data, among them Bun, the Python Brotli and brotlicffi packages, and Envoy proxies set up to decompress Brotli. Tracked as CVE-2026-111497, the flaw allows crafted compressed data to overwrite past the end of a buffer and corrupt a program's memory, potentially
Bleeping Computer
Microsoft has announced plans to add AI-powered phishing detection to Teams messages starting in early November 2026. [...]
Bleeping Computer
Microsoft says Windows Server 2016 will stop receiving security updates after it reaches the end of support in January 2027. [...]
Dark Reading
Microsoft's Project Perception adds Guardian Agents to monitor and contain anomalous AI agents, but experts warn that policing unpredictable agents with other agents may multiply — not contain — the risk.
Dark Reading
The China-linked actor used an AI-enabled penetration-testing tool to automate and accelerate its attack on more than 2,200 tenants.
Bleeping Computer
Microsoft says IT admins can re-enable the retired Exchange Web Services (EWS) API in Exchange Online to fix EWS apps that have stopped working. [...]
CISA advisories
View CSAF Summary The affected application loads dynamic-link libraries (DLLs) from an uncontrolled search path. This could allow an authenticated local attacker to place a specially crafted DLL in a directory that the application searches, leading to arbitrary code execution with the privileges of the affected application. Siemens has released a new version for Siemens Software Center and recommends to update to the latest version. Please refer to our blog post for additional information about current known active exploitation and how to detect it. The following versions of Siemens Software Center are affected: Siemens Software Center vers:intdot/<4.0.9.8 (CVE-2026-110936) CVSS Vendor Equipment v3 6.7 Siemens Siemens Software Center 1 Vulnerability Uncontrolled Search Path Element Background Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities CVE-2026-110936 The affected application loads dynamic-link libraries (DLLs) from an uncontrolled search path. This could allow an authenticated local attacker to place a specially crafted DLL in a directory that the application searches, leading to arbitrary code execution with the privileges of the affected application. Read More 1 Affected Product Siemens Software Center < V4.0.9.8 Product Status: known_affected Remediations Vendor fixUpdate to V4.0.9.8 or later version (All existing versions of SSC will be auto updated on next startup. The latest version can also be downloaded in the respective link) Additional Metrics Relevant CWE: CWE-427 Uncontrolled Search Path Element CVSS Version Base Score Base Severity Vector String 3.1 6.7 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H View CVE Details Acknowledgments Siemens ProductCERT reported this vulnerability to CISA. General Recommendations As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity Additional Resources For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories Terms of Use The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use. Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Siemens ProductCERT SSA-580366 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-10-15 Date Revision Summary 2026-10-15 1 Publication Date 2026-10-17 2 Added remediation for Siemens Software Center 2026-10-19 3 Added reference to blog post about active exploitation of the vulnerability 2026-10-22 4 Initial CISA Republication of Siemens ProductCERT SSA-580366 advisory Legal Notice and Terms of Use